Provider: National Aeronautics and Space Administration
Mission
Type: Earth Science
Orbit: Low Earth Orbit
Pad: Space Launch Complex 5, Vandenberg SFB, CA, USA
Mission Description
Explorer 20 (IE A, Ionospheric Explorer A, TOPSI, Top Side Explorer or S 48) was designed to measure electron distribution, ion density and temperature, and to estimate cosmic noise levels between 2 and 7 MHz.
